CN1601885A - F/G pulse converter for controlling rotary speed of BLDC dynamo - Google Patents
F/G pulse converter for controlling rotary speed of BLDC dynamo Download PDFInfo
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- CN1601885A CN1601885A CNA03144346XA CN03144346A CN1601885A CN 1601885 A CN1601885 A CN 1601885A CN A03144346X A CNA03144346X A CN A03144346XA CN 03144346 A CN03144346 A CN 03144346A CN 1601885 A CN1601885 A CN 1601885A
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- motor
- bldc motor
- sensor type
- pulse signal
- rotary speed
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Abstract
F/G pulse conversion device is composed of following parts: input part in use for receiving F/G pulse signal generated from control part for controlling drive of each BLDC motor; calculation part carries out conversion and calculation for each pulse signal input from the input part so as to calculate out information of rotation speed in drive part of motor; output part feeds rotation speed to control part so as to realize drive control. The invention is capable of carrying out conversion and calculation between F/G pulse signal of each sensor type BLDC motor of using different motor drive sensor and F/G pulse signal of non-sensor type BLDC motor. Thus, interconversion for the said two type BLDC motors is implemented under condition of changing least parts.
Description
Technical field
The present invention relates to the BLDC motor, relate in particular to the pulses switch device that its control rotary speed is used.
Background technology
In general, BLDC motor (BLDC Motor) is that the brush (Brush) that plays commutator (Commutator) effect in common direct current (DC) motor is removed, but a kind of motor that in the same old way keeps the DC motor properties, be used for the position of detection rotor and the detecting sensor of rotary speed according to whether possessing, it can be divided into sensor type (Sensor type) and non-sensor type (Sensorless type).
With reference to the accompanying drawings existing sensors type BLDC motor is illustrated.
As shown in Figure 1 to Figure 3, existing sensors type BLDC motor (100) is by constituting with the lower part, i.e. motor driving part (110), and it can produce revolving force; Sense part (120), it can detect the position of the rotor (113) of above-mentioned motor driving part (110); Control part (130), it can control motor driving part according to the detected signal of said sensed portion (120).
Above-mentioned motor driving part (110) is by constituting with lower member: columnar casing (111); Stator (112), it is fixed on the inner surface of casing (111) by the mode that is pressed into, and its structure is that 3 phase coils (coil) (U phase coil, V phase coil, W phase coil) are wrapped in several slits (slot); Rotor (113), its axle is located at the inside of stator (112) and can rotates, and it is made of the different permanent magnet of magnetic, and these permanent magnets are that alternately arrange at the center with the rotating shaft.
In order to detect rotor (13) thus positional information obtain the information of the rotary speed of relevant rotor (113), said sensed portion (120) is positioned between stator (112) and the rotor (113), and said sensed portion (120) is by 3 Hall elements (121 or rather; Hall Sensor) form, they are arranged between each tooth (teeth) and tooth (teeth) of adjacent slots of stator (112) continuously.
Here, because what use is 3 phase induced currents, thereby the slit number of stator (112) should be 3 multiple, and the N utmost point of the permanent magnet of corresponding rotor and the number of the S utmost point are 2 multiple, and they are replacing and install.That is to say that the ratio of the number of poles of the permanent magnet of the slit of stator (112) and rotor (113) is 3m: 2n, therefore as F/G pulse (the F/G Pulse that is produced by each Hall element (121); Frequency Generator Pulse) when being n, it can being identified as rotor (113) and revolving and make a circle, just can detect rotating speed data thus.
Above-mentioned control part (120) is by forming with the lower part: motor-driven control part (121), it is that motor-driven transducer (motor drive sensor) constitutes by microprocessor (micom) element, and it can control the rotary speed of the rotor (113) of above-mentioned motor driving part (110) by the positional information of the rotor (113) imported by Hall element (121); Master control part (132), it can be controlled the molar behavior of the product that adopted above-mentioned motor.
According to aforesaid structure, the driving of existing sensors type BLDC motor (100) is achieved in that each phase that at first makes electric current flow through the coil of stator (112), on the effect lower coil of such electric current, can produce magnetic field then, thereby make rotor (113) rotation.At this moment, Hall element (121) can detect the magnetic field intensity of rotor (113), the motor-driven control part (131) of the sense of current that is used for flowing through according to the intensity conversion in detected magnetic field each phase of coil can make each switch element connect (on), disconnect (off) in proper order, thereby rotor is continued to a direction rotation.
But, there is following shortcoming in aforesaid sensor type BLDC motor (100): owing to it needs to use several Hall elements (121) for the position that detects rotor (113), the price of motor is raise, and the reliability of drive circuit is reduced.
Therefore, a kind of non-sensor type BLDC motor that can solve aforesaid problem is arranged now.Existing non-sensor type BLDC motor such as Fig. 4 are to shown in Figure 6, and it possesses with lower member: motor driving part (210), and it can produce actuating force; Control part (230), it can control the driving of above-mentioned motor driving part (210); Sense part (220), it can detect the F/G pulse that is produced by above-mentioned control part (230), thus the control rotation number.
Above-mentioned motor driving part (210) is similar or identical with above-mentioned sensor type BLDC motor (100) with control part (230), therefore no longer repeat specification here.
Above-mentioned control part (230) is by forming with the lower part: motor-driven control part (231), and it is made of the motor-driven transducer that is used for driving above-mentioned motor driving part (210) (Motor Drive IC); Master control part (232), it constitutes on the main PCB of the product that has adopted the BLDC motor, can control the molar behavior of product.
Above-mentioned motor-driven control part (231) can constitute on PCB as above-mentioned master control part (232), also can be integrally formed with it in the casing inside of motor driving part.If the F/G pulse that motor-driven control part (231) is produced is for whenever revolving the generation (3*p) of turning around, so just it can be identified as to revolve and make a circle, above-mentioned like this master control part (232) just can be come the rotary speed of controlling and driving motor according to detected rotating speed data.
According to aforesaid structure, the driving of existing non-sensor type BLDC motor (200) is to realize like this, promptly at first motor driving part (210) drives according to the F/G pulse signal that control part (230) is produced, the control of the spinner velocity of the motor driving part (210) for driver then is to obtain the rotating speed data of rotor (213) by detecting by motor-driven control part (231) the F/G pulse signal that is produced by sense part (220), give master control part (232) with such feedback information then, thereby realize control for rotary speed.
But, owing to the control part (230) of each non-sensor type BLDC motor (200) at motor driving part (210) and be used for driving under the effect of F/G pulse of intrinsic motor-driven control part (231) of drive motors drive division (210), therefore they can not exchange use, even exchange is used under unavoidable situation, also still there is following problem, promptly needs to change parts or other parts in the required master control part of a lot of drivings (232).
Summary of the invention
In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides the pulses switch device that a kind of control rotary speed of BLDC motor is used, so that it can calculate rotating speed data by the pulse signal of motor-driven transducer is changed and calculated, thereby the realization drive controlling, and can realize the exchange of the sensor type and the non-sensor type BLDC motor of various models by it.
The technical solution adopted for the present invention to solve the technical problems is:
The F/G pulses switch device that a kind of control rotary speed of BLDC motor is used is characterized in that it comprises input part, calculation portion, efferent; Described input part, it can receive by being used for each BLDC motor is carried out the F/G pulse signal that control part produced of drive controlling; Described calculation portion, it can be to being changed and be calculated by each pulse signal of above-mentioned input part input, thereby calculate the rotating speed data of motor driving part; Described efferent, it can feed back to control part with the rotating speed data that obtains from above-mentioned calculation portion, thereby realizes drive controlling that rotary speed is increased and decreased.
The F/G pulses switch device that the control rotary speed of described BLDC motor is used, wherein calculation portion can make the F/G pulse signal of sensor type and non-sensor type BLDC motor reversibly change mutually.
The F/G pulses switch device that the control rotary speed of described BLDC motor is used, wherein calculation portion can make by mutually different F/G pulse signals and realize that the F/G pulse signal of each non-sensor type BLDC motor of drive controlling reversibly changes mutually.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structured flowchart of existing sensors type BLDC motor
Fig. 2 is the view in transverse section of existing sensors type BLDC motor
Fig. 3 is the front cross-sectional view of existing sensors type BLDC motor
Fig. 4 is the structured flowchart of existing non-sensor type BLDC motor
Fig. 5 is the view in transverse section of existing non-sensor type BLDC motor
Fig. 6 is the front cross-sectional view of existing non-sensor type BLDC motor
The structured flowchart of the F/G pulse converter that Fig. 7 uses for the control rate of BLDC motor of the present invention
Fig. 8 is the structured flowchart that possesses the non-sensor type BLDC motor of F/G pulses switch device of the present invention
Fig. 9 is the structured flowchart that possesses the sensor type BLDC motor of F/G pulses switch device of the present invention
Figure 10 is the driving flow chart in proper order that possesses the BLDC motor of F/G pulses switch device of the present invention
The number in the figure explanation:
10: transducer 11: input part
12: calculation portion 13: efferent
100: sensor type BLDC motor 300: non-sensor type BLDC motor
130,230: control part 131,231: motor-driven control part
132,232: master control part
Embodiment
The F/G pulses switch device that the control rate of BLDC motor of the present invention is used is illustrated with reference to the accompanying drawings.For those same as the prior art be equivalent to identical part, adopt identical reference marks here, and no longer repeat specification.
Extremely shown in Figure 9 as Fig. 7, the F/G pulses switch device that the control rotary speed of BLDC motor of the present invention is used is made of F/G pulse converter (10), and this F/G pulse converter (10) is by forming with the lower part: input part (11), and it can receive by being used for that sensor type or non-sensor type BLDC motor (100) (200) are carried out the F/G pulse signal that each motor-driven control part (131) (231) of drive controlling is produced; Calculation portion (12), it can change and calculate each pulse signal of being imported by above-mentioned input part (11), thereby calculates the rotating speed data of the rotor (113) (213) of motor driving part (110) (210); Efferent (13), it can feed back to the rotating speed data that obtains from above-mentioned calculation portion (12) each master control part (132) (232), thus the drive controlling that realization increases and decreases rotary speed.
Above-mentioned input part (11) is that driving sensor (drive sensor) is connected with each motor-driven control part (131) (231) that is used for sensor type BLDC motor (100) or non-sensor type BLDC motor (200) are carried out drive controlling, and the F/G pulse signal that the exciting power that it produces in the time of can making by drive controlling gets access to is imported into.
Above-mentioned calculation section (12) can be changed the mutual different F/G pulse that is produced by each drive and control of electric machine section (131) (231) that is used for driving each BLDC motor so that they can exchange; Can draw from converting the F/G umber of pulse that to exchange to the rotating speed data of the rotor (113) (213) of each motor driving part (110) (210) by calculation, realize driving each sensor type of control and non-sensor type BLDC motor (100) (200) by these information with mutually different F/G pulse signals and can or not change in the situation of parts and realize exchanging at the minimum parts of change.
Above-mentioned efferent (13) can feed back to the rotating speed data that above-mentioned calculation portion (12) is calculated the master control part (132) (232) that control part promptly is used for controlling the running of motor driving part, by the increase and decrease to input signal, thereby realization is for the control of the speed of the rotor (113) (213) of motor driving part (110) (210).
Figure 10 is the driving flow chart in proper order that possesses the BLDC motor of F/G pulses switch device of the present invention.As shown in figure 10, at first, energized makes motor-driven, and the action effect of the pulses switch device that the control rotary speed of BLDC motor of the present invention is used can be illustrated by following example.This example is to utilize transducer and make itself and non-sensor type BLDC motor exchange an example of use in the product that uses sensor type BLDC motor.At first, under the situation of using sensor type BLDC motor (100), ratio according to the number of poles of the slit of stator (112) and rotor (113) is 3m: 2p, and when the F/G umber of pulse was p, motor-driven control part (131) can be identified as it rotor and rotate 1 circle.On the contrary, under the situation of using non-sensor type BLDC motor (200), even the composition of proportions of the number of poles of the slit of stator (212) and rotor (213) 3m: 2n, still be 3n but be used for making the F/G umber of pulse of rotor (213) rotation 1 circle.
Here, for the rotary speed of determination sensor type BLDC motor (200) exactly, need to make the input of F/G pulse output signals by the input part of transducer (10), calculation portion can be changed and be calculated the F/G pulse signal of such input, promptly perform calculations with p/3n, thereby obtain the rotation information of rotor (213), and such feedback information is given the master control part (232) that the running of motor driving part (210) is controlled by efferent (13), master control part increases and decreases the input signal that inputs to motor then, thereby realizes the rotary speed of the rotor (213) of motor driving part (210) is increased and decreased.
Therefore, do not need the control part that is designed to suitable existing sensors type BLDC motor (100) is made amendment, just can convert sensor type BLDC motor (100) to non-sensor type BLDC motor (200) and use.On the contrary, by utilizing transducer (10), can be with non-sensor type BLDC motor (200) as sensor type BLDC motor (100) and need not change control part, or will exchange use by realize turning round each the non-sensor type BLDC motor of control of different intrinsic F/G pulse signal mutually.
The effect of invention
As mentioned above, can reach following effect by adopting the present invention, namely by to using mutual difference Each sensor type BLDC motor and the non-sensor type of motor-driven IC (Motor drive IC) The F/G pulse signal of BLDC motor is changed and is calculated, can be in the situation of the minimum parts of change Realize exchanging, thereby realization is for the control of the rotary speed of motor. In addition, for sensor type BLDC Motor owing to removed Hall element, therefore can reduce production costs, and reduces flow chart, And enhance productivity thus.
Claims (3)
1, the F/G pulses switch device used of a kind of control rotary speed of BLDC motor is characterized in that it comprises input part, calculation portion, efferent; Described input part, it can receive by being used for each BLDC motor is carried out the F/G pulse signal that control part produced of drive controlling; Described calculation portion, it can be to being changed and be calculated by each pulse signal of above-mentioned input part input, thereby calculate the rotating speed data of motor driving part; Described efferent, it can feed back to control part with the rotating speed data that obtains from above-mentioned calculation portion, thereby realizes drive controlling that rotary speed is increased and decreased.
2, the F/G pulses switch device used of the control rotary speed of BLDC motor according to claim 1 is characterized in that described calculation portion can make the F/G pulse signal of sensor type and non-sensor type BLDC motor reversibly change mutually.
3, the F/G pulses switch device used of the control rotary speed of BLDC motor according to claim 1 is characterized in that described calculation portion can make by different mutually F/G pulse signals to realize that the F/G pulse signal of each non-sensor type BLDC motor of drive controlling reversibly changes mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03144346XA CN1601885A (en) | 2003-09-25 | 2003-09-25 | F/G pulse converter for controlling rotary speed of BLDC dynamo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03144346XA CN1601885A (en) | 2003-09-25 | 2003-09-25 | F/G pulse converter for controlling rotary speed of BLDC dynamo |
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| Publication Number | Publication Date |
|---|---|
| CN1601885A true CN1601885A (en) | 2005-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA03144346XA Pending CN1601885A (en) | 2003-09-25 | 2003-09-25 | F/G pulse converter for controlling rotary speed of BLDC dynamo |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106103008A (en) * | 2013-12-26 | 2016-11-09 | 川崎重工业株式会社 | Robot control system |
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2003
- 2003-09-25 CN CNA03144346XA patent/CN1601885A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106103008A (en) * | 2013-12-26 | 2016-11-09 | 川崎重工业株式会社 | Robot control system |
| CN106103008B (en) * | 2013-12-26 | 2018-07-27 | 川崎重工业株式会社 | Robot control system |
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